1/* 2 * Interface to the 93C46/56 serial EEPROM that is used to store BIOS 3 * settings for the aic7xxx based adaptec SCSI controllers. It can 4 * also be used for 93C26 and 93C06 serial EEPROMS. 5 * 6 * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * substantially similar to the "NO WARRANTY" disclaimer below 17 * ("Disclaimer") and any redistribution must be conditioned upon 18 * including a substantially similar Disclaimer requirement for further 19 * binary redistribution. 20 * 3. Neither the names of the above-listed copyright holders nor the names 21 * of any contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * Alternatively, this software may be distributed under the terms of the 25 * GNU General Public License ("GPL") version 2 as published by the Free 26 * Software Foundation. 27 * 28 * NO WARRANTY 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 38 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGES. 40 * 41 * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $ 42 * 43 * $FreeBSD$ 44 */ 45#ifndef _AIC7XXX_93CX6_H_ 46#define _AIC7XXX_93CX6_H_ 47 48typedef enum { 49 C46 = 6, 50 C56_66 = 8 51} seeprom_chip_t; 52 53struct seeprom_descriptor { 54 struct ahc_softc *sd_ahc; 55 u_int sd_control_offset; 56 u_int sd_status_offset; 57 u_int sd_dataout_offset; 58 seeprom_chip_t sd_chip; 59 uint16_t sd_MS; 60 uint16_t sd_RDY; 61 uint16_t sd_CS; 62 uint16_t sd_CK; 63 uint16_t sd_DO; 64 uint16_t sd_DI; 65}; 66 67/* 68 * This function will read count 16-bit words from the serial EEPROM and 69 * return their value in buf. The port address of the aic7xxx serial EEPROM 70 * control register is passed in as offset. The following parameters are 71 * also passed in: 72 * 73 * CS - Chip select 74 * CK - Clock 75 * DO - Data out 76 * DI - Data in 77 * RDY - SEEPROM ready 78 * MS - Memory port mode select 79 * 80 * A failed read attempt returns 0, and a successful read returns 1. 81 */ 82 83#define SEEPROM_INB(sd) \ 84 ahc_inb(sd->sd_ahc, sd->sd_control_offset) 85#define SEEPROM_OUTB(sd, value) \ 86do { \ 87 ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \ 88 ahc_flush_device_writes(sd->sd_ahc); \ 89} while(0) 90 91#define SEEPROM_STATUS_INB(sd) \ 92 ahc_inb(sd->sd_ahc, sd->sd_status_offset) 93#define SEEPROM_DATA_INB(sd) \ 94 ahc_inb(sd->sd_ahc, sd->sd_dataout_offset) 95 96int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 97 u_int start_addr, u_int count); 98int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 99 u_int start_addr, u_int count); 100int ahc_verify_cksum(struct seeprom_config *sc); 101 102#endif /* _AIC7XXX_93CX6_H_ */ 103